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How to sort a dataFrame in python pandas by two or more columns?
Suppose I have a dataframe with columns a , b and c , I want to sort the dataframe by column b in ascending order, and by column c in descending order, how do I do this?
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Delete column from SQLite table
I have a problem: I need to delete a column from my SQLite database. I wrote this query
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Array vs. Object efficiency in JavaScript
I have a model with possibly thousands of objects. I was wondering what would be the most efficient way of storing them and retrieving a single object once I have it's id. The id's are long numbers.
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Error inflating when extending a class
I'm trying to create a custom view GhostSurfaceCameraView that extends SurfaceView . Here's my class definition file
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How to convert nanoseconds to seconds using the TimeUnit enum?
How to convert a value from nanoseconds to seconds?
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Is the sizeof(some pointer) always equal to four?
For example:
sizeof(char*) returns 4. As does int* , long long* , everything that I've tried. Are there any exceptions to this?
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Jquery mouseenter() vs mouseover()
So after reading a recently answered question i am unclear if i really understand the difference between the mouseenter() and mouseover() . The post states
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Is there a way to ignore a single FindBugs warning?
With PMD, if you want to ignore a specific warning, you can use // NOPMD to have that line be ignored.
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How to view file history in Git?
With Subversion I could use TortoiseSVN to view the history/log of a file.
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python assert with and without parenthesis
Here are four simple invocations of assert:
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